The AirTAC AirTAC SDA40X50SBH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 50mm stroke, PT1/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA40X50SBH is a double-acting single-rod compact cylinder engineered for tight axial footprints. Its riveted assembly joins the barrel, rear cover, piston, and rod into a very short unit, saving machine depth where a standard round-body will not fit. Delivering 628.3 N of push force at 0.5 MPa, it features a hard-anodized bore and a two-way piston seal for reliable performance.
This specific configuration includes a built-in piston magnet (-S) for position sensing, a male M14x1.5 piston-rod thread (-B) for direct load coupling, and fluororubber (-H) seals for heightened oil and thermal resistance. End-stops rely on a fixed NBR bumper that decelerates the stroke end; it is not an adjustable air cushion, so high-energy cycles may need an external shock absorber.
| Model | AirTAC SDA40X50SBH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 120 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Secures aluminum housings inside machining centers. The 628.3 N extend force holds parts firmly against the table while the short riveted body minimizes interference with the cutting tool path.
Drives mechanical folders on high-speed case erectors. The male M14x1.5 rod threads directly into the folding arm, while the FKM seals withstand lubricated factory air environments.
Actuates sorting gates on packaging lines. The built-in magnet works with reed or electronic switches to confirm gate position, ensuring smooth product routing at operating speeds up to 500 mm/s.
When sizing this 40 mm bore, step down to the SDA32 for 402.1 N @0.5 MPa or up to the SDA50 for 981.7 N @0.5 MPa. For this 628.3 N @0.5 MPa model, the safe working load is roughly 377 N (about 60 percent of capacity), translating to a vertical lift of approximately 32 kg with a 2:1 safety margin. Confirm your ordering essentials: 40 mm bore, 50 mm stroke, PT1/8 port, male M14x1.5 rod, FKM seals, and the sensor magnet.
Remember that a plain compact cylinder drifts when air is lost or the valve is centered. The fixed bumper only decelerates the stroke end and does not act as a lock or brake. If your application must hold a load without live pressure, install an external rod lock or a pilot-operated check valve.
Quick checklist
This 40 mm bore double-acting cylinder provides 628.3 N push and 527.8 N pull at 0.5 MPa, or 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum push is 128 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa with a proof pressure of 1.5 MPa, and the speed range is 30-500 mm/s.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not a field-adjustable air cushion. The -B option specifies a male M14x1.5 piston-rod thread instead of the default female M8x1.25. Additionally, the -S magnet allows tracking via reed or electronic switches, and the -H option denotes fluororubber seals.
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